[Webkit-unassigned] [Bug 41459] New: Improve the main lexer switch by mapping input characters to their type

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=41459

           Summary: Improve the main lexer switch by mapping input
                    characters to their type
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: zherczeg at webkit.org


The array can be used for other purposes as well.

SunSpider: no cahnge

Parse-only tests:

TEST                           COMPARISON            FROM                 TO             DETAILS

=============================================================================

** TOTAL **:                   1.025x as fast    33.1ms +/- 1.9%   32.3ms +/- 1.1%     significant

=============================================================================

  jquery:                      ??                 5.0ms +/- 0.0%    5.1ms +/- 4.4%     not conclusive: might be *1.020x as slow*
    1.3.2:                     ??                 5.0ms +/- 0.0%    5.1ms +/- 4.4%     not conclusive: might be *1.020x as slow*

  mootools:                    -                  5.3ms +/- 6.5%    5.1ms +/- 4.4%
    1.2.2-core-nc:             -                  5.3ms +/- 6.5%    5.1ms +/- 4.4%

  prototype:                   -                  6.3ms +/- 5.5%    6.1ms +/- 3.7%
    1.6.0.3:                   -                  6.3ms +/- 5.5%    6.1ms +/- 3.7%

  concat:                      1.031x as fast    16.5ms +/- 2.3%   16.0ms +/- 0.0%     significant
    jquery-mootools-prototype: 1.031x as fast    16.5ms +/- 2.3%   16.0ms +/- 0.0%     significant

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